A valve permitting flow in one direction only. It does not have a stem, except when equipped with a lever and weight and has no pressure adjustment. It may be inline or cartridge (manifold) design.
NSN 6220-00-337-4407
NSN 6320-01-415-0953
NSN 5930-01-532-6162
NSN 5910-01-530-2971
NSN 2925-01-147-6688
NSN 5985-01-629-9427
NSN 2925-01-134-9175
NSN 5960-00-708-7131
NSN 5999-01-512-9643
NSN 5999-01-370-4939
NSN 6220-01-578-5868
NSN 6620-00-111-7089